Milking machinery.



l N. LpAYsH'. MILKING MACHINERY. APPLICATIDB FILED NOV. 4. 1916.

Patent@ Aug. 20,. 1913.

UNITED sTATEs PATE-NT o EEIcE,

nomi :emr bazen, orlrouenmrsm, nw roux, Assioma To m nl :.avfu.v

animaron comm, a eonrona'rron ornnw v Be it known that l', NORMAN J 'cnn Daran, a subject of the King of Great Britain, re-

` sdin at Ponghkee sle, county of Dutchess,

teat cu i master ondary pulsator.

and tate of New ork, have invented a' new and useful Improvement in Milking Maf chinery, of which the following is a full, dear, and exact description, reference beinlg1 had to the accompanyin drawings, w 'ch form a part of this speci cation.

It is known, in the art of milking machines of the pulsatin type, that when pulsations are transmitte to the teat cups from a pulsator located at relatively long distance, the pulsations are comparatively weak. Again, where the teat cups are con nected to the pulsation line at widely varying distances from'the pulsator, the pulsations in the teat cups at the diierentlocations are of such different strength that if they are properly regulated to give pulsations of the required stren h to the teat cu s when relativel neart e pulsator, the p sations tend to atten out when the teat cu particularly serious in that type of-installationy comprisingl a vacuum line, a pulsation line connected with a master or primary pulsator, sets of twochamber teat cups whose inner chambers are connected with the milk pail and vthe vacuum line, and secondary pulsators, one (say) for each set of teat cups, connected with the pulsation line and operable by the pulsations therein to create pneumatic pulsations in the outer chambers. An example of such a* machine is .to be found iny type o milkin the patent to eitch, No. 1,196,000, issued August 29, 1916. In such amachine the ulsator' is located at a point where mechanical power is conveniently available, generally at the pump that produces the vacuum in -the vacuum line, and at various pointsalong the two mains` cocks are providedto permit working connections to be established between the mains and the branch pipes connected with ythe pail and v teat cups.

When these 'connections are made at apoint more or less remote from thc master pulsator, the master-pulsations flatten out until they are too weak to operate thc scc- Tlie result is that the practical. opcrativeness of milking maare located at a more remote distance. `ese objections have been found to be vthe length. of the arger portion of :rama nAcY.

1,276,184. iveilmon 0f Rm PWM- Patented Aug. 20, 1918.

application mea November c, 191e. serial no. 12am.

lTo all 'whom it may camera: chinery of the type above described is 4limited to installations wherein conditions permit the location ofthe master pulsator comparatively close to the branch pipe connections and to installations of limited size and,

notwithstanding its'pronounced advantages over other types of milking machinery, has been found unworkable, or at least unsatisfactory, when conditions compel-the location of the primary pulsator at a substantial distance from the branch pipe connections or where lon mains are required owv 1n tothe size of 'einstallatiom he ob'ect of ni ,invention is to provide 'illustrate a preferred formzof my invention,

Figure 1 is a diagrammatic view of a com stallation. i

In Fig. 1 A4I have shown a vacuum ump'zr` and vacuum pipe"line b with coc c; a

pletel'installation and Fig 2 a lon tudinal section' of the relay forming part o such in- Y so pulsator line of the relay valve, is known inv the art. This valve, in its preferred forni,

as shown in Fig. 2 comprises a two-diameter cylinder m in whichq'a di'erential piston n reciprocates. The smaller end of the cylinder 1s open to the atmosphere and the larger end to the master pulsation pi point where the larger and sma ler diameter e. At the cylinders are joined together is connected a pipe o that communicates with the vacuum pipe line b. Thesecondary pulsation line'g connects to the `side of the la diameter portion of the cylinder. Throu the center of the smaller portion of the di erental pis` open to the atmosphere, and.

ton is a hole having branc es terminating' midway of ton. 'The relative-sizes of the the lare cylinder and the differential area are suc that, with Aa pressure 'in the end of the large cylinder approximately haltl vway' between' atmospheric and the full vacuum in the pipe line, the forces 'will'be balanced and the piston will remain atrest. If the pressure in the large end is 'materiallyY ini creased the piston will be moved to the left and if materially decreased it will be moved to the right. I have found that the design as shown is easily moved and IWill respond to small changes in pressure in the pipe e. At the time of a low pressure Wave in the primary pulsationpipc e the piston Will take'the position shown and the secondary pulsation pipe will be exhausted into the vacuum pipe. At the time of a'high pressure wave 1n pipe e the piston Will move to the left and atmospheric pressure will enter through the hole 7J and branches g to fill the secondary ulsation pipe g.

In the above described manner comparatively weak pulsations at the end oi a long primary pulsation pipe will operate the relay valve to produce full strength pulsations ina secondary pulsation pipe.

I have not separately lllustrated the seconliary pulsator in the valve chamber r, but vit will be understood by those skilled in the art that it may he a pulsator valve of the same type as the. relay valve shown in Fig, 2, which may be assumed to illustrate such a pulsator valve if the pipe e is assumed to be the pulsation pipe l and the pipes o and 'g the connections respectively to the vacuum line and to the outer teat cup chambers.

It will be understood that the invention is shown in its simplest formand that a plurality of relay valves may be employed, which may be arranged to connect up, either in series or in multiple with each other, a plurality of secondary pulsatin-lines with the primary pulsation line.

Having now fully described my invention, what I desire to claim and protect by Letters Patent is:

1. In a milking machine operating system, in combination, a portable milking machine unit comprising teat cups and connections, a pulsation branch pipe connected with said unit and adapted to convey pneumatic pulsations thereto, a plurality of xed pulsationpipelines, a primary pulsator connected with.A and adapted to produce pneumatic pulsations in one of the ulsation pipe lines, a relay valve interposed etween ad'acent pulsation pipelines and controllable Jby the pneumatic pulsations in one to produce pneumaticpulsations in the. other, and one 0r more cocks 'arranged on the pulsation ypipe line ,or lines -in which i'elay pulsations Iare produced, said" branch pipe being con-v nectible to said 'cock orvcocks, whereby pulsa.- tio'ns ofthe required stren h to renderhthe nnlking machine unit, e yciently `operable may be producedV in a milking machine unit relatively distant from the primary pulsator.

2. In` a milkin machine operating system, in combination, a. primary pulsation pipe line and means .to produce primary pneumatic pulsations therein, a secondary pulsation pipe line, a relay valve controllable by said primary pneumatic pulsations to producesecondary pneumatic pulsations in the secondary pulsation pipe line, teat cups, and means connected with, and operable by the pulsations in, the secondary pulsation pipe line to produce pulsations withinthe teat cups. b

3. In a milking machine operating system, the combination with a primary 'pulsation ,pipe line and means to produce pneumatic pulsations therein, a vacuum pipe line, and a secondary pulsation pipe line, of a relay valve operaihle by pneumatic pulsations from said primary pulsation pipe line to connect the secoin'lary pulsation pipe li ne alternately With the vacuum pipe line and with the atmosphere.

4. In a milking machine operatngrsys tem, the combination with tcat cups, ci' a pulsator connected with and adapted to pro- 'duce pulsations in .the teat cups, a secondary pulsation line connected with and control-- ling the operation of said pulsator, a primary pulsation line and a primary pulsator adapted to produce primary pneumatic puln sations therein, and a relay connected with the primary pulsation line and controllable by the pulsations therein to produce Secondary pneumatic pulsations in the secondary pulsation line.

5. In a milking machine operating system, in combination, a set of double chambered teat oups and teat cup ipes connected with the outer chambers ofp the respective teat cups, asecondary pulsator connected with and adapted to produce pulsations in said pulsation pipe lines one connected with, andv the other relatively distant from. the

pipes connected `with ,the outer chambers thereof, a vacuum ipe connected with the inner teat cup cham rs, a ulsatorconnected with and adapted to pro uce pulsations in pri-f mary pulsator, a relay valve controllable the outer teat cup chambers, a primary pulsation line anda primary pulsator adapted to produce pneumatic pulsations therein, a secondary pulsation line connected with and controlling the operation of the first named pulsator, and a relay valve connected with and operable by pneumatic pulsations from the primary pulsation pipeline to produce secondary pulsations in the secondary pulsation pipe line. v

7. ln a milking machine operating system, lthe combination with two-chamber teat cups, pipes 4minnected with the outer chambers thereof, a vacuum line connected with the inner teat cup chambers, a pulsator connect* ed with and adapted to produce pulsations in the outer teat cup chambers, a primary pulsation line and a primary pulsator adapt ed to produce pneumatic pulsations therein1 a, secondar pulsation line connected with and contro ing the operation of the first named puleator, and a relay valve connected with and operable by pneumatic pulsations from the primary pulsation pipe line to connect the secondary pulsation pipe line alternately with. the vacuum line and with the atmosphere.

8. In a milking machine operating sys'- tem, the combination with two-chamber teat cups, pipes connected with the outer cham bers thereof, a vacuum line connected with the inner chambers thereof, adapted to connect each o t alternately with the atmosphere and line, a secondary puleation line connected with and controlling the operation of said pulsawr valve, a primary pulsation line and a primary pulsator adapted to produce pneumatic pulsations tlierem, and a relay valve connected with and operable if: pulsations from the primary line to connect the secondary line alternately with the vacuum line i., i with the atmosphere.

In testimfmyl of which invention l have hereunto set my," hand, at city of New Y Ork, on this :2nd day of November, 1916.

'NORMAN J OHN UAYSH.

Witnesses;

GEO. REMING'NN, G. O. TALLMAN.

e said pipes ulsator valve with 

